3.7 hazardous materials and hazardous waste - Missile Defense ...

Chapter 3—Affected Environment3.14.1 ALASKA INSTALLATIONSStorm water management activities within the State of Alaska aregoverned by Title 18 Environmental Conservation, Chapter 60, Article 2of the Alaska Administrative Code in accordance with 40 CFR 122.26.Other applicable codes include Title 18 Environmental Conservation,Chapter 70 Water Quality Standards; Title 11 Natural Resources, Part 6Lands, Chapter 93 Water Management; and Title 46 Water, Air, Energy,and Environmental Conservation. For construction projects, a copy of theNotice of Intent and SWPPP prepared for the U.S. EPA must be providedto the Alaska Department of Environmental Conservation.3.14.1.1 Clear AFS—Water ResourcesThe water resources ROI includes all surface water features, drainageareas, and underlying aquifers that could be affected by construction oroperations. This area includes Clear AFS and an area withinapproximately 2 kilometers (1 mile) of the base boundary (figure 3.14-1).Surface WaterClear AFS is located in the Nenana River watershed, USGS CatalogingUnit 19040508 (U.S. EPA, 1998—Surf Your Watershed). Surface waterflow on Clear AFS follows the topography in a northeasterly direction.Runoff follows several small creeks north of the station that flow into theNenana River (U.S. Department of the Air Force, 1997—Supplemental EAfor Radar Upgrade, Clear AS). Due to the low mean annual precipitationfor the area of 33 centimeters (13 inches), very little overland flowoccurs other than at spring breakup (Clear AS, 1998—Draft Solid WasteManagement Plan). The 100-year floodplain of the Nenana River isrestricted to the westernmost portion of the installation (U.S. Departmentof the Air Force, 1997—Supplemental EA for Radar Upgrade, Clear AS).There are four primary bodies of water contained on or bordering ClearAFS. The largest of these bodies of water is the Nenana River, whichruns along the entire west boundary of Clear AFS. The other waterbodies, Lake Sansing, the power plant cooling ponds, and the radarcooling water reject ditch, are man-made. There are approximately 1.6kilometers (1 mile) of relatively undisturbed wilderness between theNenana River and any developed area on Clear AFS. Lake Sansing is agroundwater infiltration area (approximately 5 hectares [12 acres])contained in an old gravel borrow pit, and is fed by the radar operationscooling pond overflow via the reject ditch and by rainfall. The coolingpond is an unlined reservoir (approximately 3 hectares [8 acres]) thatreceives water via underground pipe from the power plant. (U.S.Department of the Air Force, 1997—Supplemental EA for Radar Upgrade,Clear AS)NMD Deployment Final EIS 3-389